Wheel rim and tire structupve



Feb. 19, 1929. 1,702,647

J. R. GAMMETER WHEEL RIM AND TIRE STRUCTURE Filed O t. 1921 [nvenior if John R. Gammelen IIIIIIIIIII/I Patented Feb. 19, 1929.

UNITED STATES PATENT OFFICE.

JOHN R. GAMIVIETER, OF AKRON, OHIO, ASSIGNOR TO THE B. F. GOODRIGH COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEXV YORK.

WHEEL RIM AND TIRE STRUCTURE.

Application filed October 6, 1921.

This invention relates to vehicle wheel rim and tire structures. and particularly to structures comprising a cushi n tire having an arched body port-ion with its legs secured to separate annular base members.

Qnc of my objects is to provide an inn proved structure wherein the cushion or body portion of a tire having an arched cross-sectional form may be vulcanized upon separate base members, each leg of the tire-body thus being secured to one of said base members, and whereby said base members may be socurely held in proper spaced relation upon the wheel. A further object is to provide a structure which may be quickly and easily assembled and disassembled for the mounting or removal of the tire.

Of the accompanying drawings:

Fig. 1 is a fragmentary View, in section and perspective, of a wheel,.rim and tire structure showing an embodiment of my invention adapted for use with a cylindrical folly-band adapted to receive a tire in pressed-on relation.

Fig. 2 is a side elevation of the same on a smaller scale, showing, at line 1-1, where the section of Fig. 1 is taken.

Fig. 3 is a sectional view of a tire and an auxiliary base member, illustrating a method of forming the latter.

Fig. t is a sectional View of an embodiment suited for a wheel having a felly-band adapted to receive a common form of den'lountable tire-carrying rim.

Referring to the drawings, 10 is the tirebody or cushion tire having an arched cross sectional form, each leg thereof being; secured by vulcanization to an annular base member 11, 12. The tire-body usually is built upon the base members and upon a sectional core interposed between them, the core being removed after the tire has been vulcanized. 13, 13 are layers of hard rubber compound used bet-ween the base members 11, 12 and the cushion 10 to obtain good adhesion of the tirebody to the base members.

For holding the base members 11, 12, I provide an auxiliary base member or ring 1-l (Fig. 1) formed with circumferential rib 15 adapted to lie between the base members 11, 12 when said ring is inserted within the latter, and with outwardly-turned side flanges 16, 17 adapted to fit the outer shoulders of said base members to prevent the latter from spreading apart. The ring lat may be trans- Scrial No. 505,883.

verscly split, as indicated at 18 (Figs. 1 and 2), and sprung, into place within the base members ll, 12, or it may be continuous, in which latter case especially I prefer to give it first the form shown in full lines in Fig. 3, the ring: here being designated let, mount the tire upon it, and then bend or deform the metal of the ring, forcing it outward, as by rolling or swag'ing, to form the circumferential rib and the last-formed side flange, as indicatcd by the dotted lines at 15 and 17 respectively in Fig. 3. In the embodiment illustrated in Fi 1, 2 and 3, the tire with the rinn' therein, whether the latter be split or not, may be simply pressed onto the follyhaud or fixed rim member 19 upon the folly 20. as is commonly done with solid tires having an integral metal base, the seating surface of the tire base being, as usual, slightly smaller in circun'iference than the outer surface of the folly band, and its rounded margin on the advancing side, formed by the outwardly-turned flange 16 or 17, exerting a wedgring action as the tire is advanced laterally onto the wheel by the operation of the press, which wedging action sets up a tension or contracting stress in the tire base tending to hold it tightly in place when once forced onto the wheel. While the tire bases 11, 12, and the auxiliary base 14 are thus frictionally held against relative circumferential movement, dowels 11, 12 may be provided between the base members and the auxiliary base, either with or without the rib 15 and the flanges 16, 17 to prevent circumferential as well as lateral relative movement.

The modified form of ring or auxiliary base designated 14 in Fig. 4 is adapted to serve as a demountable rim, being provided with circumferential seating flanges 21, 22, formed with oppositely beveled, annular, seating surfaces which are of least diameter at the adjacent or inner sides of said flanges. It is thus adapted to seat upon a fixed rim or folly-band 23 upon a felly 24;, said folly-band being formed at one side with a circumferential rim-seating flange beveled to fit the seating face of the flange 21, and at the other side beveled to receive a wedging ring 26, which preferably is transversely split and so formed as to engage in a wedging act-ion both the fixed rim or folly-band 23 and the flange 22 of the auxiliary rim 14;. 27 is one of a set of clamps adapted to force the wedging ring 26 into position, under action of a nut 28 upon a bolt 29 mounted in the telly 2i. )0 'trl -n- 1 I) 1 H, 1 1-! Q9 1/1 1 1 o is a me a ab ici upon me lo, s ioi st. porting the inner end of the clamps 27' and thus protecting the telly from indentation or defacemeut thereby.

In this embodiment the auxiliary base or oz Tying run 14: may be endless, and the encumierential rib 15 and the side flanges l6, 1'? may be formed by rolling or swagino in place,

as above described, or it may be re 'sely split and, ha vmg been previously lOll ed or provided with the circuinterential rib, or other spacing means, and with the side flanges, may be sprung into position within the tire, the base members 12 providing suflicient circumferential strength for the structure.

In both of these embodiments the base members 11, 12 of the tire are seem v heJ in proper spaced relation, the auxiliary member, 14: or 14 being wedged outward a" d thus held in firmly interlocked relation t tire-base members by the lined telly-band, 19 or 23 and my inven ion thus renders it highly practical to construct the tire with completely separated base members, permitting, in the forming of the tire-body, the use of an annular, sectional molding core which may readily be withdrawn from the tire-body after the latter has been vu canized to its base members. My invention also pro vides a convenient form of carrying support for such a tire.

The specific embodiment of my invention shown in Fig. l is the subject of a divisional application, Serial No. 591,786, filed by me October 2, 1922, and entitled Tire and rim structure, and the method of forming the structures herein described is the subject matter of my divisional application Serial No 747,677, filed November 3, 1924.

1,7oaea7 Various modifications, especially as regards the manner of mounting the auxiliary base or carrying rim upon the wheel, may be resorted to without departing from the scope c my invention as defined by the claims, and I do not limit my claims wholly to the specific construction shown.

I claim:

1. A rim and tire structure comprising a plurality of annular tire-base members, a

' on tire vulcanized thereon and a single, il auxiliary base member common to said tire-base members, mounted within the r and constituting their principal immesupport, said auxiliary base members g provided with spacing means between said 1 release members and with side flanges plurality of metal base rings, a cushion tirebody vulcanized thereon, a transversely- I mounted concentrically within said base ri, s and serving as radial support therefor, said auxiliary ring having an outwardly-projecting portion between said base rings for holdin them in spacedapart relation and having outwardly-projecting ee re portions embracing the outer margii oi? the base rings for holding them against lateral separation.

:3. The combination with a pair of base n Pmbcrs of a locking ring adapted to lock said members together, and means adapted to be deformed to secure said locking ring in place, said locking ring being adapted to in aintain the base members in fixed relationship when said locking ring is secured in place by deforming said means.

In witness whereof I have hereunto set my hand this 4th day of October, 1921.

JOHN R. GAMMETER. 

